Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

A floating cat sanctuary on an Amsterdam canal.

An incredibly well-preserved piece of ninth-century Viking poop.

Legend has it that a Dutch fisherman lost control of his Shetland pony and tumbled from this cliff.

A remarkably well preserved tower dating all the way back to the Iron Age.

This modest marker near Notre Dame identifies the very center of Paris.

The celebrated eyesore created by starry-eyed sweethearts.

Despite the name, these small saltwater swimming pools have nothing to do with the Romans.

A warning against "the demon drink" adorns the northwest entrance of Glasgow Green.

The modern birthplace of Irish freedom.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

World's largest herd of white deer populate a former U.S. Army depot.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

One of Scotland's earliest hydroelectric power stations.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

A cross marks the spot in a small Scottish village that claims to be the exact center of the country.

A pagan tradition of draping trees with rags eerily lives on.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Eat the ultimate iteration of Portugal's most beloved pastry.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”